APA stil citiranja

Collins, G. R. (1976). How to be a people helper: How to be a people helper. Santa Ana, Calif.: Vision House Publishers.

Chicago stil citiranja

Collins, Gary R. How to be a people helper: How to be a people helper. Santa Ana, Calif.: Vision House Publishers, 1976.

MLA stil citiranja

Collins, Gary R. How to be a people helper: How to be a people helper. Santa Ana, Calif.: Vision House Publishers, 1976.

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